Question

Which ordered pair is a solution of the inequality?
y≥4x - 5

A. (3, 4)
B. (2, 1)
C. (3, 0)
D. (1, 1)

Answer 1

plug each point into the inequality

if you get a true inequality, then that point is in the solution set

Answer 2

for example, let's check choice A

y≥4x - 5

4≥4*3 - 5

4≥12 - 5

4≥7

which is FALSE, so (3, 4) is NOT a solution

So choice A is out

Answer 3

ok I suck at this really bad

Answer 4

it would be all points on that line as well as all points above the line I believe

Answer 5

well just practice practice practice and you'll get better

Answer 6

I am a mom trying to help my 13yr old

Answer 7

What is the answer?

Answer 8

follow the steps I did to check choice A to check the other choices

Answer 9

you're looking for an inequality that's true when you plug in the given point

Answer 10

well good luck I am pretty sure that the teacher will want the line thing I'm not sure it depends on what was taught but the answers will be D

Answer 11

I don't tell the answers I just check to know if her work is right I have a degree but I have done this in years.

Answer 12

The answer should be D because
\[1\ge4(1)-5\]

Answer 13

are you sure
you got C

Answer 14

she got C

Answer 15

when you use c you get
\[0\ge4(3)-5\]
\[0\ge7\]
Which isn't true so I am pretty positive it is D

Answer 16

Thanks she just puts anything down...

Answer 17

No problem I'm glad I could help

Answer 18

A. (3, 4)
B. (2, 1)
C. (3, 0)
D. (1, 1)

Answer 19

so D

Answer 20

Yes D

Answer 21

I have another question she go 2 more wrong can I trouble you?

Answer 22

go right ahead

Answer 23

How many solutions does the system have?

x = -4y + 4
2x + 8y = 8

A. one solution
B. two solutions
C. infinitely many solutions
D. no solution

Answer 24

it should be infinitely many because if you put them into slope intercept form they are the same line

Answer 25

so c

Answer 26

Yes

Answer 27

ok last 1

Answer 28

I'm ready

Answer 29

The local zoo has two water tanks for the elephant exhibit that are leaking One water tank contains 12 gal of water and is leaking at a constant rate of 3 gal/h. The second water tank contains 8 gal of water and is leaking at a constant rate of 5 gal/h. When will the two tanks have the same amount of water? Explain. Let x = the number of hours the tanks are filling and let y = the number of gallons in the tank.

A. In 2 hours, because the solution to the system is (2,18).

B. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have time be –2 hours.

C. In –2 hours, because the solution to the system is (–2,18).

D. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have –2 gallons in the tanks.

Answer 30

the answer is B because we can't have negative time